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Sleep-related breathing disorders
Sleep-related movement disorders
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Sleep-Related Movement Disorders

Sleep-related movement disorders are abnormal movements that occur during sleep or while falling asleep. These disorders include everything from bothersome muscle twitches to disorders with serious long-term risks, like bruxism, or nighttime teeth grinding, that can result in permanent damage
to the teeth and jaw.

Symptoms of sleep-related movement disorders include daytime fatigue, fragmented or broken sleep, and non-refreshing sleep.

A person’s age, medication use and health history affect their risk of experiencing a sleep-related movement disorder. Some sleep-related movement disorders, like bruxism and rhythmic movement disorder, appear more frequently in young children and usually disappear by age 5 or 6. Another sleep-related movement disorder, rapid eye movement sleep behavior disorder, usually appears after age 50.

Having another sleep disorder increases the risk of experiencing a sleep-related movement disorder. Some medications, including those commonly taken for depression and other mental illness, like selective serotonin reuptake inhibitors (SSRIs) and lithium, can contribute to an increased risk for sleep-related movement disorders. High caffeine intake and high levels of stress also increase the risk for these conditions.

Diagnosis

Because sleep-related movement disorders are linked to a number of health conditions and medications, they are diagnosed through a combination of a detailed health history and polysomnography, or an overnight sleep study.

Conditions

Restless Legs Syndrome is the most common sleep-related movement disorder. Some, like bruxism, are experienced primarily by children, while others may be experienced for a short time or while taking a certain medication.

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